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Single-point control method under dynamic traffic conditions

A single-point control and transportation technology, applied in the field of intelligent transportation, can solve problems such as poor applicability and inability to apply saturation, and achieve the effect of enhancing controllability and avoiding the increase in difficulty of solving

Active Publication Date: 2019-04-16
浙江海康智联科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is suitable for the adjustment of the timing scheme in the unsaturated situation, but cannot be applied in the saturated situation, and has poor applicability

Method used

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  • Single-point control method under dynamic traffic conditions
  • Single-point control method under dynamic traffic conditions
  • Single-point control method under dynamic traffic conditions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0099] Embodiment 1: Take a certain intersection in a certain city in a certain province as an example.

[0100] See Table 1 for the time distribution of the original signal control at the intersection.

[0101] Table 1 Time distribution of original signal control

[0102]

[0103] The original phase sequence scheme of the intersection is as follows: Figure 5 As shown (ignoring the right-turn phase in the figure), Figure 5 (left) and Figure 5 (middle) phase number adopts figure 1 The rules shown, due to Figure 5 (Right) has increased the left turn and go straight at the same time release, so in figure 1 The phase numbering convention shown is added with the addition of phase 9 for turning east straight left, phase 10 for turning south straight left, phase 11 for turning west straight left, and phase 12 for turning north straight left. And the turning flow of the intersection is as follows: Figure 6 As shown, under this phase sequence and turning flow, in the act...

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PUM

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Abstract

The invention discloses a single-point control method under dynamic traffic conditions. The relevant constraint and the input information of the intersection are constructed by combining the traffic states of the adjacent upstream and downstream intersections; the phase sequence conversion caused by the change of the traffic demand of the intersection is considered; the method for updating the time interval and the saturation flow of the saturated head is further considered, so as to ensure that the currently used data is the data closest to the current traffic state; the corresponding signalcontrol strategies are formulated for different traffic states, the problem that the solution difficulty is increased due to the fact that the models are complex is avoided, and meanwhile, the stability and the flexibility of the control scheme are comprehensively considered; and different tolerance saturation can be set for each phase according to experience, road weight and the like so as to adjust the signal control strength, so as to enhance the controllability of implementation.

Description

technical field [0001] The invention belongs to the technical field of intelligent transportation, and in particular relates to a single-point control method under dynamic traffic conditions. Background technique [0002] As an important hub of urban road network, intersection is a conflict point of traffic flow and a frequent point of traffic accidents. Local problems that occur at intersections can quickly spread and accumulate to the surroundings by virtue of the openness of the network. If not handled properly, it will often cause large-scale, long-term damage or even complete paralysis of the traffic system. Traffic signal control is an essential control measure at intersections. A reasonable phase timing scheme can not only allocate the right of way of traffic in all directions, but also improve the operational efficiency of intersections. Therefore, the optimization of traffic signal timing has always been a research hotspot. Over the years, signal control methods h...

Claims

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Application Information

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IPC IPC(8): G08G1/08G08G1/01
CPCG08G1/0116G08G1/08
Inventor 刘彦斌朱海峰刘畅温熙华韦学武龚方徽
Owner 浙江海康智联科技有限公司
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